The enthalpy change for the conversion of 1 2 Cl 2 ( g ) to Cl - ( aq ) is ( - ) ________ kJ mol - 1 (Nearest Integer)

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
The enthalpy change for the conversion of $\frac{1}{2} {Cl}_{2} (g)$ to ${Cl}^{-} (aq)$ is ( $-$ ) ________ kJ ${mol}^{- 1}$ (Nearest Integer)

Given: $Δ_{dis} H_{{Cl}_{2 (g)}}^{θ} = {240 kJ mol}^{- 1}$ , $Δ_{eg} H_{{Cl}_{(g)}}^{θ} = - {350 kJ mol}^{- 1}$ , $Δ_{hyd} H_{{Cl}_{(g)}^{-}}^{θ} = - {380 kJ mol}^{- 1}$ [2023]

Ans.
(610)

$Δ H_{r}^{0} = \frac{1}{2} \times B.E. + Δ H_{eg} + Δ H_{hyd}$

$Δ H_{r}^{0} = \frac{1}{2} \times 240 + (- 350) + (- 380) = - 610 kJ/mol$

Want Us to Email you About Special Offers & Updates?